From: "hch@infradead.org" <hch@infradead.org>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
Cc: "hch@infradead.org" <hch@infradead.org>,
Jens Axboe <axboe@kernel.dk>,
linux-block <linux-block@vger.kernel.org>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
Keith Busch <kbusch@kernel.org>,
"linux-scsi @ vger . kernel . org" <linux-scsi@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"linux-fsdevel @ vger . kernel . org"
<linux-fsdevel@vger.kernel.org>,
"Darrick J . Wong" <darrick.wong@oracle.com>
Subject: Re: [PATCH v2 10/11] iomap: Add support for zone append writes
Date: Wed, 25 Mar 2020 02:48:28 -0700 [thread overview]
Message-ID: <20200325094828.GA20415@infradead.org> (raw)
In-Reply-To: <SN4PR0401MB35980056EFCD6D0003463F939BCE0@SN4PR0401MB3598.namprd04.prod.outlook.com>
On Wed, Mar 25, 2020 at 09:45:39AM +0000, Johannes Thumshirn wrote:
>
> Can you please elaborate on that? Why doesn't this hold true for a
> normal file system? If we split the DIO write into multiple BIOs with
> zone-append, there is nothing which guarantees the order of the written
> data (at least as far as I can see).
Of course nothing gurantees the order. But the whole point is that the
order does not matter.
next prev parent reply other threads:[~2020-03-25 9:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-24 15:24 [PATCH v2 00/11] Introduce Zone Append for writing to zoned block devices Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 01/11] block: factor out requeue handling from dispatch code Johannes Thumshirn
2020-03-25 8:40 ` Christoph Hellwig
2020-03-25 15:40 ` Jens Axboe
2020-03-24 15:24 ` [PATCH v2 02/11] block: provide fallbacks for blk_queue_zone_is_seq and blk_queue_zone_no Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 03/11] block: Introduce REQ_OP_ZONE_APPEND Johannes Thumshirn
2020-03-24 16:07 ` Johannes Thumshirn
2020-03-25 16:24 ` Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 04/11] block: introduce blk_req_zone_write_trylock Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 05/11] block: Introduce zone write pointer offset caching Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 06/11] scsi: sd_zbc: factor out sanity checks for zoned commands Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 07/11] scsi: sd_zbc: emulate ZONE_APPEND commands Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 08/11] null_blk: Cleanup zoned device initialization Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 09/11] null_blk: Support REQ_OP_ZONE_APPEND Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 10/11] iomap: Add support for zone append writes Johannes Thumshirn
2020-03-24 15:41 ` Christoph Hellwig
2020-03-25 5:27 ` Damien Le Moal
2020-03-25 6:25 ` hch
2020-03-25 9:45 ` Johannes Thumshirn
2020-03-25 9:48 ` hch [this message]
2020-03-25 9:54 ` Johannes Thumshirn
2020-03-25 9:59 ` Damien Le Moal
2020-03-25 10:01 ` hch
2020-03-25 10:15 ` Johannes Thumshirn
2020-03-24 22:45 ` Dave Chinner
2020-03-25 5:38 ` Damien Le Moal
2020-03-25 8:32 ` Johannes Thumshirn
2020-03-24 15:24 ` [PATCH v2 11/11] zonefs: use zone-append for sequential zones Johannes Thumshirn
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